Which of the following is NOT an effect of sympathetic stimulation of the heart?
A) an increase in heart rate
B) a decrease in the duration of systole
C) a decrease in the slope of the pacemaker potential
D) an increase in the amount of Ca2+ entering cardiac muscle cells
E) an increase in the rate of cross-bridge cycling in ventricular muscle cells
Correct Answer:
Verified
Q9: Action potentials in the heart spread from
Q18: Which of the following would be most
Q19: Which of the following statements concerning the
Q21: Which is TRUE about the function of
Q22: Sinoatrial node cells:
A) reach threshold only when
Q25: The frequency of action potentials generated by
Q25: During the cardiac cycle of an individual
Q26: Which of the following statements about blood
Q27: Which of the following statements about the
Q32: Which occurs during isovolumetric ventricular contraction?
A)Rapid filling
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